Following the ending to the mid-season finale of “Arrow,” things are going to be shaken up a little in The CW series and the latest promo shows that things are going to go off the rails and fast. If you haven’t seen the mid-season finale of “Arrow,” we’re issuing a spoiler warning as the video spoils it – all others check it out below!

Titled “Left Behind,” the mid-season premiere for “Arrow” is described as follows:

“In the aftermath of Oliver’s fight with Ra’s al Ghul, Diggle and Arsenal continue to protect the city in the Arrow’s absence. However, after three days without hearing from Oliver, they begin to fear the worst may have happened to their friend. Felicity refuses to believe that Oliver could be dead until Merlyn pays the team a surprise visit. Thea suspects there is something more behind Oliver’s disappearance and asks Merlyn for a favor. Meanwhile, Ray tests a part of his new suit and Laurel takes up the mantle of the Black Canary.”

Directed by Glen Winter and written by Marc Guggenheim & Erik Oleson, “Left Behind” is set to air on January 21. “Arrow” airs Wednesdays at 8 p.m. on The CW.